Russia, Brazil, Tanzania, Madagascar, Zambia, Sri Lanka, Burma, India, Color: color change, from bluish green (daylight) to purple, red or brown (incandescent light), Hardness: 8, Refractive index: 1.74 1.77, Density: 3.68 3.80, Chemical composition: BeAl2O4, Crystal structure: orthorhombic, Origins: Russia, Brazil, Tanzania, Madagascar, Zambia, Sri Lanka, Burma
Southern and central Africa, Sri Lanka, blue, India, brown, green, Orange, Sri Lanka, blue, India, brown, green, Orange
Scorpio
Cancer, Libra, Scorpio, Cancer, Libra, Scorpio, Cancer, Libra, Scorpio
Not Available
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)
1,1 ; 3,2.
2,1 basal ; 2,1 prismatic ; 3,1 pinacoidal
Transparent, Transparent to nearly opaque
Transparent, Transparent to translucent